Good thread!
Well, I am sure I have been a bad mum a number of times with my two kids!
Here's one that stands out for me.
My daughter was 6 months old and I still put her in her bassinet when she fell asleep at night. I always thought, hey, she doesn't move around much and that she was still safe.
Well, I went downstairs and OH and I watched tv, of which he had it on loudly due to surround sound. Later, I went to check on my daughter and she wasn't in the bassinet. I looked on the floor and I saw a bum and legs coming from under our bed. She was sleeping.
She must have woken up, probably cried, fell out of the bassinet and crawled a bit under our bed. God, I felt so shitty for this. Poor little one! Needless to say, I never put her in it again.
Stupid mom I was! I still feel guilty for it!